[2] Plavšić played for Mega Basket junior team[3] and was included in their senior roster in the mid season of 2015-16.

[4] He made his professional debut for Smederevo of the Basketball League of Serbia (KLS) in the 2016-17 season and averaged 4.5 points, 2.4 rebounds and 0.5 assists per game and was a teammate to future NBA player Goga Bitadze.

[5] In October 2017, Plavšić moved to Chattanooga and enrolled to Hamilton Heights Christian Academy, where he played his senior year, averaging 9.6 points and 7.5 rebounds per game.

[10] Over the season, Plavšić in 27 ABA League games averaged 15.4 points and 7.7 rebounds on 65.6% shooting from the field.

[12] Plavšić's play with Mega Basket got him a training camp invite for the Serbian national team ahead of the 2024 Summer Olympics in Paris.